Change S rank to require no miss

osu.Game.Rulesets.Catch/Scoring/CatchScoreProcessor.cs

@@ -89,7 +89,7 @@ protected override double GetComboScoreChange(JudgementResult result)
             return baseIncrease * Math.Min(Math.Max(0.5, Math.Log(result.ComboAfterJudgement, combo_base)), Math.Log(combo_cap, combo_base));
         }
 
-        public override ScoreRank RankFromAccuracy(double accuracy)
+        public override ScoreRank RankFromScore(double accuracy, IReadOnlyDictionary<HitResult, int> results)
         {
             if (accuracy == accuracy_cutoff_x)
                 return ScoreRank.X;

osu.Game.Rulesets.Osu/Scoring/OsuScoreProcessor.cs

@@ -1,9 +1,11 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Collections.Generic;
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Osu.Judgements;
 using osu.Game.Rulesets.Scoring;
+using osu.Game.Scoring;
 
 namespace osu.Game.Rulesets.Osu.Scoring
 {
@@ -14,6 +16,22 @@ public OsuScoreProcessor()
         {
         }
 
+        public override ScoreRank RankFromScore(double accuracy, IReadOnlyDictionary<HitResult, int> results)
+        {
+            ScoreRank rank = base.RankFromScore(accuracy, results);
+
+            switch (rank)
+            {
+                case ScoreRank.S:
+                case ScoreRank.X:
+                    if (results.GetValueOrDefault(HitResult.Miss) > 0)
+                        rank = ScoreRank.A;
+                    break;
+            }
+
+            return rank;
+        }
+
         protected override HitEvent CreateHitEvent(JudgementResult result)
             => base.CreateHitEvent(result).With((result as OsuHitCircleJudgementResult)?.CursorPositionAtHit);
     }

osu.Game.Rulesets.Taiko/Scoring/TaikoScoreProcessor.cs

@@ -2,9 +2,11 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Collections.Generic;
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Rulesets.Taiko.Objects;
+using osu.Game.Scoring;
 
 namespace osu.Game.Rulesets.Taiko.Scoring
 {
@@ -33,6 +35,22 @@ protected override double GetComboScoreChange(JudgementResult result)
                    * strongScaleValue(result);
         }
 
+        public override ScoreRank RankFromScore(double accuracy, IReadOnlyDictionary<HitResult, int> results)
+        {
+            ScoreRank rank = base.RankFromScore(accuracy, results);
+
+            switch (rank)
+            {
+                case ScoreRank.S:
+                case ScoreRank.X:
+                    if (results.GetValueOrDefault(HitResult.Miss) > 0)
+                        rank = ScoreRank.A;
+                    break;
+            }
+
+            return rank;
+        }
+
         public override int GetBaseScoreForResult(HitResult result)
         {
             switch (result)

osu.Game.Tests/Beatmaps/Formats/LegacyScoreDecoderTest.cs

@@ -10,7 +10,6 @@
 using System.Linq;
 using NUnit.Framework;
 using osu.Framework.Extensions;
-using osu.Framework.Utils;
 using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.Formats;
 using osu.Game.Beatmaps.Legacy;
@@ -23,6 +22,7 @@
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Osu;
 using osu.Game.Rulesets.Osu.Mods;
+using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Replays;
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Rulesets.Replays;
@@ -59,14 +59,14 @@ public void TestDecodeManiaReplay()
                 Assert.AreEqual(2, score.ScoreInfo.Statistics[HitResult.Great]);
                 Assert.AreEqual(1, score.ScoreInfo.Statistics[HitResult.Good]);
 
-                Assert.AreEqual(829_931, score.ScoreInfo.TotalScore);
+                Assert.AreEqual(829_931, score.ScoreInfo.LegacyTotalScore);
                 Assert.AreEqual(3, score.ScoreInfo.MaxCombo);
 
                 Assert.IsTrue(score.ScoreInfo.Mods.Any(m => m is ManiaModClassic));
                 Assert.IsTrue(score.ScoreInfo.APIMods.Any(m => m.Acronym == "CL"));
                 Assert.IsTrue(score.ScoreInfo.ModsJson.Contains("CL"));
 
-                Assert.IsTrue(Precision.AlmostEquals(0.8889, score.ScoreInfo.Accuracy, 0.0001));
+                Assert.That((2 * 300d + 1 * 200) / (3 * 305d), Is.EqualTo(score.ScoreInfo.Accuracy).Within(0.0001));
                 Assert.AreEqual(ScoreRank.B, score.ScoreInfo.Rank);
 
                 Assert.That(score.Replay.Frames, Is.Not.Empty);
@@ -252,7 +252,49 @@ public void TestSoloScoreData()
         }
 
         [Test]
-        public void AccuracyAndRankOfStableScorePreserved()
+        public void AccuracyOfStableScoreRecomputed()
+        {
+            var memoryStream = new MemoryStream();
+
+            // local partial implementation of legacy score encoder
+            // this is done half for readability, half because `LegacyScoreEncoder` forces `LATEST_VERSION`
+            // and we want to emulate a stable score here
+            using (var sw = new SerializationWriter(memoryStream, true))
+            {
+                sw.Write((byte)3); // ruleset id (mania).
+                                   // mania is used intentionally as it is the only ruleset wherein default accuracy calculation is changed in lazer
+                sw.Write(20240116); // version (anything below `LegacyScoreEncoder.FIRST_LAZER_VERSION` is stable)
+                sw.Write(string.Empty.ComputeMD5Hash()); // beatmap hash, irrelevant to this test
+                sw.Write("username"); // irrelevant to this test
+                sw.Write(string.Empty.ComputeMD5Hash()); // score hash, irrelevant to this test
+                sw.Write((ushort)1); // count300
+                sw.Write((ushort)0); // count100
+                sw.Write((ushort)0); // count50
+                sw.Write((ushort)198); // countGeki (perfects / "rainbow 300s" in mania)
+                sw.Write((ushort)0); // countKatu
+                sw.Write((ushort)1); // countMiss
+                sw.Write(12345678); // total score, irrelevant to this test
+                sw.Write((ushort)1000); // max combo, irrelevant to this test
+                sw.Write(false); // full combo, irrelevant to this test
+                sw.Write((int)LegacyMods.Hidden); // mods
+                sw.Write(string.Empty); // hp graph, irrelevant
+                sw.Write(DateTime.Now); // date, irrelevant
+                sw.Write(Array.Empty<byte>()); // replay data, irrelevant
+                sw.Write((long)1234); // legacy online ID, irrelevant
+            }
+
+            memoryStream.Seek(0, SeekOrigin.Begin);
+            var decoded = new TestLegacyScoreDecoder().Parse(memoryStream);
+
+            Assert.Multiple(() =>
+            {
+                Assert.That(decoded.ScoreInfo.Accuracy, Is.EqualTo((double)(198 * 305 + 300) / (200 * 305)));
+                Assert.That(decoded.ScoreInfo.Rank, Is.EqualTo(ScoreRank.SH));
+            });
+        }
+
+        [Test]
+        public void RankOfStableScoreUsesLazerDefinitions()
         {
             var memoryStream = new MemoryStream();
 
@@ -266,12 +308,12 @@ public void AccuracyAndRankOfStableScorePreserved()
                 sw.Write(string.Empty.ComputeMD5Hash()); // beatmap hash, irrelevant to this test
                 sw.Write("username"); // irrelevant to this test
                 sw.Write(string.Empty.ComputeMD5Hash()); // score hash, irrelevant to this test
-                sw.Write((ushort)198); // count300
+                sw.Write((ushort)195); // count300
                 sw.Write((ushort)1); // count100
-                sw.Write((ushort)0); // count50
+                sw.Write((ushort)4); // count50
                 sw.Write((ushort)0); // countGeki
                 sw.Write((ushort)0); // countKatu
-                sw.Write((ushort)1); // countMiss
+                sw.Write((ushort)0); // countMiss
                 sw.Write(12345678); // total score, irrelevant to this test
                 sw.Write((ushort)1000); // max combo, irrelevant to this test
                 sw.Write(false); // full combo, irrelevant to this test
@@ -287,13 +329,13 @@ public void AccuracyAndRankOfStableScorePreserved()
 
             Assert.Multiple(() =>
             {
-                Assert.That(decoded.ScoreInfo.Accuracy, Is.EqualTo((double)(198 * 300 + 100) / (200 * 300)));
-                Assert.That(decoded.ScoreInfo.Rank, Is.EqualTo(ScoreRank.A));
+                // In stable this would be an A because there are over 1% 50s. But that's not a thing in lazer.
+                Assert.That(decoded.ScoreInfo.Rank, Is.EqualTo(ScoreRank.SH));
             });
         }
 
         [Test]
-        public void AccuracyAndRankOfLazerScorePreserved()
+        public void AccuracyRankAndTotalScoreOfLazerScorePreserved()
         {
             var ruleset = new OsuRuleset().RulesetInfo;
 
@@ -321,8 +363,10 @@ public void AccuracyAndRankOfLazerScorePreserved()
 
             Assert.Multiple(() =>
             {
+                Assert.That(decodedAfterEncode.ScoreInfo.TotalScore, Is.EqualTo(284_537));
+                Assert.That(decodedAfterEncode.ScoreInfo.LegacyTotalScore, Is.Null);
                 Assert.That(decodedAfterEncode.ScoreInfo.Accuracy, Is.EqualTo((double)(199 * 300 + 30) / (200 * 300 + 30)));
-                Assert.That(decodedAfterEncode.ScoreInfo.Rank, Is.EqualTo(ScoreRank.SH));
+                Assert.That(decodedAfterEncode.ScoreInfo.Rank, Is.EqualTo(ScoreRank.A));
             });
         }
 
@@ -415,6 +459,12 @@ public TestLegacyScoreDecoder(int beatmapVersion = LegacyBeatmapDecoder.LATEST_V
                     Ruleset = new OsuRuleset().RulesetInfo,
                     Difficulty = new BeatmapDifficulty(),
                     BeatmapVersion = beatmapVersion,
+                },
+                // needs to have at least one objects so that `StandardisedScoreMigrationTools` doesn't die
+                // when trying to recompute total score.
+                HitObjects =
+                {
+                    new HitCircle()
                 }
             });
         }

osu.Game.Tests/Database/BackgroundDataStoreProcessorTests.cs

@@ -9,6 +9,7 @@
 using osu.Framework.Extensions;
 using osu.Framework.Testing;
 using osu.Game.Beatmaps;
+using osu.Game.Database;
 using osu.Game.Rulesets;
 using osu.Game.Scoring;
 using osu.Game.Scoring.Legacy;

osu.Game.Tests/Visual/Ranking/TestSceneAccuracyCircle.cs

@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Collections.Generic;
 using NUnit.Framework;
 using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
@@ -96,6 +97,14 @@ private ScoreInfo createScore(double accuracy, Ruleset ruleset)
         {
             var scoreProcessor = ruleset.CreateScoreProcessor();
 
+            var statistics = new Dictionary<HitResult, int>
+            {
+                { HitResult.Miss, 1 },
+                { HitResult.Meh, 50 },
+                { HitResult.Good, 100 },
+                { HitResult.Great, 300 },
+            };
+
             return new ScoreInfo
             {
                 User = new APIUser
@@ -109,15 +118,9 @@ private ScoreInfo createScore(double accuracy, Ruleset ruleset)
                 TotalScore = 2845370,
                 Accuracy = accuracy,
                 MaxCombo = 999,
-                Rank = scoreProcessor.RankFromAccuracy(accuracy),
+                Rank = scoreProcessor.RankFromScore(accuracy, statistics),
                 Date = DateTimeOffset.Now,
-                Statistics =
-                {
-                    { HitResult.Miss, 1 },
-                    { HitResult.Meh, 50 },
-                    { HitResult.Good, 100 },
-                    { HitResult.Great, 300 },
-                }
+                Statistics = statistics,
             };
         }
     }

osu.Game.Tests/Visual/Ranking/TestSceneResultsScreen.cs

@@ -21,6 +21,7 @@
 using osu.Game.Rulesets;
 using osu.Game.Rulesets.Difficulty;
 using osu.Game.Rulesets.Osu;
+using osu.Game.Rulesets.Scoring;
 using osu.Game.Scoring;
 using osu.Game.Screens;
 using osu.Game.Screens.Play;
@@ -71,15 +72,16 @@ public void TestScaling()
 
         private int onlineScoreID = 1;
 
-        [TestCase(1, ScoreRank.X)]
-        [TestCase(0.9999, ScoreRank.S)]
-        [TestCase(0.975, ScoreRank.S)]
-        [TestCase(0.925, ScoreRank.A)]
-        [TestCase(0.85, ScoreRank.B)]
-        [TestCase(0.75, ScoreRank.C)]
-        [TestCase(0.5, ScoreRank.D)]
-        [TestCase(0.2, ScoreRank.D)]
-        public void TestResultsWithPlayer(double accuracy, ScoreRank rank)
+        [TestCase(1, ScoreRank.X, 0)]
+        [TestCase(0.9999, ScoreRank.S, 0)]
+        [TestCase(0.975, ScoreRank.S, 0)]
+        [TestCase(0.975, ScoreRank.A, 1)]
+        [TestCase(0.925, ScoreRank.A, 5)]
+        [TestCase(0.85, ScoreRank.B, 9)]
+        [TestCase(0.75, ScoreRank.C, 11)]
+        [TestCase(0.5, ScoreRank.D, 21)]
+        [TestCase(0.2, ScoreRank.D, 51)]
+        public void TestResultsWithPlayer(double accuracy, ScoreRank rank, int missCount)
         {
             TestResultsScreen screen = null;
 
@@ -91,6 +93,7 @@ public void TestResultsWithPlayer(double accuracy, ScoreRank rank)
                 score.HitEvents = TestSceneStatisticsPanel.CreatePositionDistributedHitEvents();
                 score.Accuracy = accuracy;
                 score.Rank = rank;
+                score.Statistics[HitResult.Miss] = missCount;
 
                 return screen = createResultsScreen(score);
             });